<div>
  <h2>基础用法</h2>
  <el-dropdown options="menuItems" trigger="hover" placement="bottom" on-select="handleSelect($item)">

    <!-- 自定义触发按钮 -->
    <div class="el-dropdown__trigger">
      操作菜单 <i class="el-icon-arrow-down"></i>
    </div>
  </el-dropdown>
  <h2>基础用法</h2>
  <el-dropdown options="menuItems" trigger="hover" placement="bottom" on-select="handleSelect($item)">

    <!-- 自定义触发按钮 -->
    <div class="el-dropdown__trigger">
      <el-button type="primary">操作菜单 <i class="el-icon-arrow-down"></i></el-button>
    </div>
  </el-dropdown>
  <h2>基础用法</h2>
  <el-dropdown options="menuItems" trigger="hover" placement="bottom" on-select="handleSelect($item)">

    <!-- 自定义触发按钮 -->
    <div class="el-dropdown__trigger">
      <button class="el-button el-button--primary">
        操作菜单 <i class="el-icon-arrow-down"></i>
      </button>
    </div>
  </el-dropdown>
  <h2>基础用法</h2>
  <el-dropdown options="menuItems" trigger="hover" placement="bottom" on-select="handleSelect($item)">

    <!-- 自定义触发按钮 -->
    <div class="el-dropdown__trigger">
      <button class="el-button el-button--primary">
        操作菜单 <i class="el-icon-arrow-down"></i>
      </button>
    </div>
  </el-dropdown>
</div>